21196315 has 8 divisors (see below), whose sum is σ = 29069280. Its totient is φ = 14534592.

The previous prime is 21196313. The next prime is 21196327. The reversal of 21196315 is 51369112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21196315 - 2¹ = 21196313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21196313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302770 + ... + 302839.

It is an arithmetic number, because the mean of its divisors is an integer number (3633660).

Almost surely, 2^21196315 is an apocalyptic number.

21196315 is a deficient number, since it is larger than the sum of its proper divisors (7872965).

21196315 is an equidigital number, since it uses as much as digits as its factorization.

21196315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605621.

The product of its digits is 1620, while the sum is 28.

The square root of 21196315 is about 4603.9455904691. The cubic root of 21196315 is about 276.7494639369.

The spelling of 21196315 in words is "twenty-one million, one hundred ninety-six thousand, three hundred fifteen".